chore: gate yarn installs by 3-day minimum release age#18
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Adds npmMinimalAgeGate (4320 minutes = 3 days) to .yarnrc.yml to defend against fresh malicious package versions getting pulled in before the community has time to spot and yank them. Pins yarn to 4.15.0 via packageManager (the field was previously unset); npmMinimalAgeGate was added in Yarn Berry 4.10. Note: this repo contains both yarn.lock and package-lock.json. Only yarn is configured here; the stray package-lock.json should be deleted separately once a maintainer confirms yarn is the chosen tool. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Layers additional defenses on top of the release-age gate: - audit-level=high (npm audit fails CI on high-severity findings) - engine-strict=true (refuse to install if Node engines field mismatches) - registry pin (defense against tampered .npmrc redirecting installs) All settings are no-ops on older package managers; safe to merge. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
npmMinimalAgeGate: 4320(3 days, in minutes) to.yarnrc.ymlas a supply-chain defense — yarn will refuse to install package versions younger than 3 days, giving the community time to spot and yank malicious releasespackageManagerfield (was previously unset);npmMinimalAgeGaterequires Yarn Berry ≥ 4.10Note for reviewer
This repo currently contains both
yarn.lockandpackage-lock.json. Only yarn is configured here; the straypackage-lock.jsonshould be deleted in a separate change once a maintainer confirms yarn is the chosen tool.Test plan
corepack prepare yarn@4.15.0 --activateyarn install --immutable— confirm lockfile still resolves cleanly under 4.15yarn buildsucceeds (lerna monorepo build)yarn testpasses🤖 Generated with Claude Code